Recreated the JSON controller to fix auto-complete forms.

app/controllers/JsonController.php

@@ -0,0 +1,65 @@
+<?php
+
+/**
+ * Class JsonController
+ *
+ */
+class JsonController extends BaseController
+{
+
+    /**
+     * Returns a list of categories.
+     *
+     * @return \Illuminate\Http\JsonResponse
+     */
+    public function categories()
+    {
+        /** @var \FireflyIII\Database\Category $categories */
+        $categories = App::make('FireflyIII\Database\Category');
+        $list = $categories->get();
+        $return = [];
+        foreach ($list as $entry) {
+            $return[] = $entry->name;
+        }
+
+        return Response::json($return);
+
+
+    }
+
+    /**
+     * Returns a JSON list of all beneficiaries.
+     *
+     * @return \Illuminate\Http\JsonResponse
+     */
+    public function expenseAccounts()
+    {
+        /** @var \FireflyIII\Database\Account $accounts */
+        $accounts = App::make('FireflyIII\Database\Account');
+        $list = $accounts->getExpenseAccounts();
+        $return = [];
+        foreach ($list as $entry) {
+            $return[] = $entry->name;
+        }
+
+        return Response::json($return);
+
+    }
+
+    /**
+     * @return \Illuminate\Http\JsonResponse
+     */
+    public function revenueAccounts()
+    {
+        /** @var \FireflyIII\Database\Account $accounts */
+        $accounts = App::make('FireflyIII\Database\Account');
+        $list = $accounts->getRevenueAccounts();
+        $return = [];
+        foreach ($list as $entry) {
+            $return[] = $entry->name;
+        }
+
+        return Response::json($return);
+
+    }
+}